.swiper-button-prev,
.swiper-container-rtl .swiper-button-prev {
  left: 180px;
  right: auto;
  opacity: 0;
  transition: opacity 0.5s linear;
}

.swiper-button-next,
.swiper-container-rtl .swiper-button-prev {
  right: 572px;
  left: auto;
  opacity: 0;
  transition: opacity 0.5s linear;
}

.pic:hover .swiper-button-prev,
.swiper-container-rtl .swiper-button-prev {
  opacity: 1;
}

.pic:hover .swiper-button-next,
.swiper-container-rtl .swiper-button-prev {
  opacity: 1;
}

.swiper-pagination-bullet{
  width: 11px;
  height: 11px;
  border-radius: 0;
  border: 1.5px solid rgb(255, 255, 255);
  background: none;
  
}
.swiper-pagination-bullet-active{
  background-color: aliceblue
}